Megan Kamerick

On a hot summer afternoon in Albuquerque, N.M., the setting for the hit TV show Breaking Bad, a trolley that resembles a roving adobe house is packed with tourists.

The series follows Walter White, a chemistry teacher who turns to cooking methamphetamine to provide for his family after he gets cancer. The show, which begins its final season Sunday, has attracted critical acclaim, a slew of awards and rabid fans — some of whom have crammed onto the trolley for a tour of Breaking Bad filming sites.